Alert archive / Delaware / Severe Thunderstorm Warnings in 1989
Severe Thunderstorm Warning 49, NWS Wilmington, NC
NWS Wilmington, NC issued this severe thunderstorm warning at Jun 15, 1989, 8:11 PM EDT for Kent County, New Castle County, Delaware. It was in force for 64 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jun 15, 1989, 8:11 PM EDT (00:11 UTC)
- Expired
- Jun 15, 1989, 9:15 PM EDT
- In force
- 64 min
- Issued by
- NWS Wilmington, NC
- Area
- Whole counties
Counties Kent County, DE, New Castle County, DE
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 15, 8:15 PM EDT | Thunderstorm Wind 57 | Kent, DE |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Atlantic City In, NJ (KACY), launched 00:00Z, 0.2 hours before the alert went out and 93 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 1156 J/kg
- Mixed-layer CIN
- -54 J/kg
- Mixed-layer LCL
- 1008 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 172 m²/s²
- 0-3 km storm-relative helicity
- 239 m²/s²
- Significant tornado parameter
- 0.9
- Supercell composite
- 5.8
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KILG 160013 RRA
SVRILG
DEC001-003-160115-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE WILMINGTON DE
811 PM EDT THU JUN 15 1989
THE NATIONAL WEATHER SERVICE IN WILMINGTON HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 915 PM EDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
IN CENTRAL DELAWARE
...KENT
IN NORTH DELAWARE
...NEW CASTLE
WEATHER RADAR SHOWS A SEVERE THUNDERSTORM ON THE MARYLAND EASTERN
SHORE WEST AND SOUTHWEST OF DOVER. THIS THUNDERSTORM IS MOVING
RAPIDLY EAST AND WILL BE IN DELAWARE...LOWER NEW CASTLE AND UPPER
KENT COUNTIES WITHIN THE NEXT QUARTER HOUR. THE THUNDERSTORM
WILL BE ACCOMPANIED BY STRONG GUSTY WINDS AND HEAVY RAIN.
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Local storm report, Jun 15, 5:04 PM EDT, 3 hours 7 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON NC
501 PM EDT THU JUN 15 1989
TIME EVENT
1700 EDT JUST NORTHEAST OF AUTRYVILLE NORTH CAROLINA IN NORTHERN
SAMPSON COUNTY...MARBLE SIZE HAILSpecial weather statement, Jun 15, 5:11 PM EDT, 3 hours before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE WILMINGTON NC 505 PM EDT THU JUN 15 1989 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR PARTS OF CENTRAL AND WESTERN NORTH CAROLINA UNTIL 8 PM AND ANOTHER SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR CENTRAL AND SOUTHERN SOUTH CAROLINA UNTIL 11 PM... AT 500 PM THERE WERE SEVERAL THUNDERSTORMS OVER THE SOUTHERN COASTAL PLAIN SECTION OF SOUTHEAST NORTH CAROLINA. THESE STORMS WERE IN SOUTHEAST CUMBERLAND AND NORTHERN SAMPSON COUNTY. MARBLE SIZE HAIL WAS REPORTED WITH ONE OF THESE STORMS AS IT PASSED TO THE NORTH OF AUTRYVILLE IN NORTHERN SAMPSON COUNTY. PERSONS IN THE PATH OF THESE STORMS CAN EXPECT STRONG GUSTY WINDS..VERY HEAVY RAIN AND POSSIBLY HAIL AGAIN. THE THUNDERSTORMS WERE MOVING TO THE NORTH NORTHEAST AT ABOUT 25 MPH.
Special weather statement, Jun 15, 5:45 PM EDT, 2 hours 26 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE WILMINGTON NC 545 PM EDT THU JUN 15 1989 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR PARTS OF CENTRAL AND WESTERN NORTH CAROLINA UNTIL 8 PM AND ANOTHER SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR CENTRAL AND SOUTHERN SOUTH CAROLINA UNTIL 11 PM... AT 525 PM THERE WERE SEVERAL THUNDERSTORMS WITH VERY HEAVY RAIN OVER THE NORTH MIDLANDS SECTION OF SOUTH CAROLINA AND OVER THE SOUTHERN AND CENTRAL COASTAL PLAIN SECTION OF SOUTHEAST NORTH CAROLINA. THE STRONGEST STORMS WERE CENTERED IN WAYNE..SOUTHERN JOHNSTON..AND NORTHERN SAMPSON COUNTY NORTH CAROLINA AND IN MARLBORO COUNTY SOUTH CAROLINA. THESE STORMS WERE MOVING TO THE NORTH NORTHEAST AT 30 MPH. PERSONS IN NORTHERN SAMPSON COUNTY CAN EXPECT STRONG GUSTY WINDS..VERY HEAVY RAIN AND POSSIBLY HAIL UNTIL 7 PM. REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEVERE THUNDERSTORMS..WITH LARGE HAIL AND DAMAGING WINDS..IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS.
Local storm report, Jun 15, 7:34 PM EDT, 37 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE CAPE HATTERAS NC
0730 PM EDT THU JUN 15 1989
TIME EVENT
0725 PM EDT 1 INCH HAIL AND MARBLE SIZE HAIL. WINDS IN
EXCESS OF 60 MPH. TREES AND POWER LINES DOWN
IN THE TOWN OF MURFREESBORO. REPORTED BY THE
MURFREESBORO POLICE DEPARTMENT.
LEINNearby
Severe Thunderstorm Warnings in Delaware, 1989Every severe thunderstorm warning in 1989
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.